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<pre><span class="sourceLineNo">001</span>package frc3128.EventManager;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import frc3128.Util.Constants;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import frc3128.Util.DebugLog;<a name="line.4"></a>
<span class="sourceLineNo">005</span>import java.util.Vector;<a name="line.5"></a>
<span class="sourceLineNo">006</span><a name="line.6"></a>
<span class="sourceLineNo">007</span>/**<a name="line.7"></a>
<span class="sourceLineNo">008</span> * <a name="line.8"></a>
<span class="sourceLineNo">009</span> * @author Noah Sutton-Smolin<a name="line.9"></a>
<span class="sourceLineNo">010</span> */<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>//Several untested modifications; rollback to revision 122 if it fails, though I don't know why it would<a name="line.12"></a>
<span class="sourceLineNo">013</span>public class EventManager {<a name="line.13"></a>
<span class="sourceLineNo">014</span>    private static Vector  eventList               = new Vector();<a name="line.14"></a>
<span class="sourceLineNo">015</span>    private static Vector  singleEventListFlag     = new Vector();<a name="line.15"></a>
<span class="sourceLineNo">016</span>    private static Vector  deleteFlag              = new Vector();<a name="line.16"></a>
<span class="sourceLineNo">017</span>    private static boolean eventProcessingDisabled = false;<a name="line.17"></a>
<span class="sourceLineNo">018</span>    private static long    iteration               = 0;<a name="line.18"></a>
<span class="sourceLineNo">019</span>    <a name="line.19"></a>
<span class="sourceLineNo">020</span>    private static void insertIntoEvents(Event event, boolean single) {<a name="line.20"></a>
<span class="sourceLineNo">021</span>        eventList.addElement(event);<a name="line.21"></a>
<span class="sourceLineNo">022</span>        singleEventListFlag.addElement(single ? Boolean.TRUE : Boolean.FALSE);<a name="line.22"></a>
<span class="sourceLineNo">023</span>        deleteFlag.addElement(Boolean.FALSE);<a name="line.23"></a>
<span class="sourceLineNo">024</span>    }<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>    private static void checkForDuplicates(Event event) {<a name="line.26"></a>
<span class="sourceLineNo">027</span>        if(!Constants.EVENT_DUPLICATE_CHECKS) return;<a name="line.27"></a>
<span class="sourceLineNo">028</span>        for(int i = 0; i &lt; eventList.size(); i++)<a name="line.28"></a>
<span class="sourceLineNo">029</span>            if(event.equals((Event) eventList.elementAt(i)) &amp;&amp; !(deleteFlag.elementAt(i) == Boolean.TRUE))<a name="line.29"></a>
<span class="sourceLineNo">030</span>                DebugLog.log(DebugLog.LVL_WARN, "EventManager", "Event ( ^ ) being registered is a duplicate of another event!");<a name="line.30"></a>
<span class="sourceLineNo">031</span>    }<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>    protected static void addSingleEvent(Event event) {<a name="line.33"></a>
<span class="sourceLineNo">034</span>        DebugLog.log(DebugLog.LVL_STREAM, "EventManager", "Adding SINGLE event " + event.toString());<a name="line.34"></a>
<span class="sourceLineNo">035</span>        checkForDuplicates(event);<a name="line.35"></a>
<span class="sourceLineNo">036</span>        insertIntoEvents(event, true);<a name="line.36"></a>
<span class="sourceLineNo">037</span>    }<a name="line.37"></a>
<span class="sourceLineNo">038</span><a name="line.38"></a>
<span class="sourceLineNo">039</span>    protected static void addContinuousEvent(Event event) {<a name="line.39"></a>
<span class="sourceLineNo">040</span>        DebugLog.log(DebugLog.LVL_STREAM, "EventManager", "Adding CONTINUOUS event " + event.toString());<a name="line.40"></a>
<span class="sourceLineNo">041</span>        checkForDuplicates(event);<a name="line.41"></a>
<span class="sourceLineNo">042</span>        insertIntoEvents(event, false);<a name="line.42"></a>
<span class="sourceLineNo">043</span>    }<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>    /**<a name="line.45"></a>
<span class="sourceLineNo">046</span>     * Processes the Vector of events and executes them in their order of<a name="line.46"></a>
<span class="sourceLineNo">047</span>     * insertion.<a name="line.47"></a>
<span class="sourceLineNo">048</span>     */<a name="line.48"></a>
<span class="sourceLineNo">049</span>    public static void processEvents() {<a name="line.49"></a>
<span class="sourceLineNo">050</span>        if(EventManager.eventProcessingDisabled) return; iteration++;<a name="line.50"></a>
<span class="sourceLineNo">051</span>        if(iteration % Constants.EVENT_CLEANUP_AFTER_ITER == 0) cleanupEvents();<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>        int deletedEvents = 0;<a name="line.53"></a>
<span class="sourceLineNo">054</span>        for(int i = 0; i &lt; eventList.size(); i++) {<a name="line.54"></a>
<span class="sourceLineNo">055</span>            if(((Boolean) deleteFlag.elementAt(i)).booleanValue()) {deletedEvents++; continue;}<a name="line.55"></a>
<span class="sourceLineNo">056</span>            <a name="line.56"></a>
<span class="sourceLineNo">057</span>            Event event = (Event) eventList.elementAt(i);<a name="line.57"></a>
<span class="sourceLineNo">058</span>            if(((Boolean) singleEventListFlag.elementAt(i)).booleanValue()) {<a name="line.58"></a>
<span class="sourceLineNo">059</span>                DebugLog.log(DebugLog.LVL_STREAM, "EventManager", "Marking single event " + event.toString() + " for deletion.");<a name="line.59"></a>
<span class="sourceLineNo">060</span>                deleteFlag.setElementAt(Boolean.TRUE, i); deletedEvents++;<a name="line.60"></a>
<span class="sourceLineNo">061</span>            }<a name="line.61"></a>
<span class="sourceLineNo">062</span>            if(event.shouldRun()) {<a name="line.62"></a>
<span class="sourceLineNo">063</span>                try{<a name="line.63"></a>
<span class="sourceLineNo">064</span>                    DebugLog.log(DebugLog.LVL_STREAM, "EventManager", "Running event " + event.toString()); <a name="line.64"></a>
<span class="sourceLineNo">065</span>                    event.execute();<a name="line.65"></a>
<span class="sourceLineNo">066</span>                } catch(Exception e) {<a name="line.66"></a>
<span class="sourceLineNo">067</span>                    e.printStackTrace();<a name="line.67"></a>
<span class="sourceLineNo">068</span>                    DebugLog.log(DebugLog.LVL_ERROR, event.toString(), "Uncaught exception in event: " + e.getMessage());<a name="line.68"></a>
<span class="sourceLineNo">069</span>                    e.printStackTrace();<a name="line.69"></a>
<span class="sourceLineNo">070</span>                    DebugLog.log(DebugLog.LVL_ERROR, event.toString(), "Due to error, deleting event: " + event.toString());<a name="line.70"></a>
<span class="sourceLineNo">071</span>                    deleteFlag.setElementAt(Boolean.TRUE, i); deletedEvents++;<a name="line.71"></a>
<span class="sourceLineNo">072</span>                }<a name="line.72"></a>
<span class="sourceLineNo">073</span>            }<a name="line.73"></a>
<span class="sourceLineNo">074</span>            if(!event.shouldRun()) {<a name="line.74"></a>
<span class="sourceLineNo">075</span>                DebugLog.log(DebugLog.LVL_STREAM, "EventManager", "Cancelled event " + event.toString() + " being marked for deletion.");<a name="line.75"></a>
<span class="sourceLineNo">076</span>                deleteFlag.setElementAt(Boolean.TRUE, i); deletedEvents++;<a name="line.76"></a>
<span class="sourceLineNo">077</span>            }<a name="line.77"></a>
<span class="sourceLineNo">078</span>        }<a name="line.78"></a>
<span class="sourceLineNo">079</span>        if(deletedEvents &gt;= Constants.EVENT_CLEANUP_AFTER_DELEV) {<a name="line.79"></a>
<span class="sourceLineNo">080</span>            DebugLog.log(DebugLog.LVL_STREAM, "EventManager", "Running cleanupEvents from " + deletedEvents + <a name="line.80"></a>
<span class="sourceLineNo">081</span>                    " deleted events (&gt;=" + Constants.EVENT_CLEANUP_AFTER_DELEV + ").");<a name="line.81"></a>
<span class="sourceLineNo">082</span>            cleanupEvents();<a name="line.82"></a>
<span class="sourceLineNo">083</span>        }<a name="line.83"></a>
<span class="sourceLineNo">084</span>    }<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span>    protected static void cleanupEvents() {<a name="line.86"></a>
<span class="sourceLineNo">087</span>        int count = 0;<a name="line.87"></a>
<span class="sourceLineNo">088</span>        for(int i = 0; i &lt; deleteFlag.size(); i++)<a name="line.88"></a>
<span class="sourceLineNo">089</span>            if(((Boolean) deleteFlag.elementAt(i)).booleanValue() || !((Event)eventList.elementAt(i)).shouldRun()) {<a name="line.89"></a>
<span class="sourceLineNo">090</span>                eventList.removeElementAt(i);<a name="line.90"></a>
<span class="sourceLineNo">091</span>                singleEventListFlag.removeElementAt(i);<a name="line.91"></a>
<span class="sourceLineNo">092</span>                deleteFlag.removeElementAt(i);<a name="line.92"></a>
<span class="sourceLineNo">093</span>                i--; count++;<a name="line.93"></a>
<span class="sourceLineNo">094</span>            }<a name="line.94"></a>
<span class="sourceLineNo">095</span>        if(count != 0) DebugLog.log(DebugLog.LVL_STREAM, "EventManager", "Cleaned up events, total: " + count);<a name="line.95"></a>
<span class="sourceLineNo">096</span>    }<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span>    protected static void removeEvent(Event event) {<a name="line.98"></a>
<span class="sourceLineNo">099</span>        int removedEventCount = 0;<a name="line.99"></a>
<span class="sourceLineNo">100</span>        for(int i = 0; i &lt; eventList.size(); i++)<a name="line.100"></a>
<span class="sourceLineNo">101</span>            if(event.equals((Event) eventList.elementAt(i))) {<a name="line.101"></a>
<span class="sourceLineNo">102</span>                DebugLog.log(DebugLog.LVL_STREAM, "EventManager", "By request, marking event " + ((Event) eventList.elementAt(i)).toString() + " for deletion.");<a name="line.102"></a>
<span class="sourceLineNo">103</span>                deleteFlag.setElementAt(Boolean.TRUE, i);<a name="line.103"></a>
<span class="sourceLineNo">104</span>                removedEventCount++;<a name="line.104"></a>
<span class="sourceLineNo">105</span>            }<a name="line.105"></a>
<span class="sourceLineNo">106</span>        if(removedEventCount == 0)<a name="line.106"></a>
<span class="sourceLineNo">107</span>            DebugLog.log(DebugLog.LVL_WARN, "EventManager", "removeEvent was called but no event was marked for deletion!");<a name="line.107"></a>
<span class="sourceLineNo">108</span>        if(removedEventCount &gt; 1)<a name="line.108"></a>
<span class="sourceLineNo">109</span>            DebugLog.log(DebugLog.LVL_INFO, "EventManager", "removeEvent was called, and " + removedEventCount + " events were marked for deletion.");<a name="line.109"></a>
<span class="sourceLineNo">110</span>    }<a name="line.110"></a>
<span class="sourceLineNo">111</span><a name="line.111"></a>
<span class="sourceLineNo">112</span>    /**<a name="line.112"></a>
<span class="sourceLineNo">113</span>     * Removes all events from the queue; clears any running tasks.<a name="line.113"></a>
<span class="sourceLineNo">114</span>     */<a name="line.114"></a>
<span class="sourceLineNo">115</span>    public static void dropAllEvents() {<a name="line.115"></a>
<span class="sourceLineNo">116</span>        DebugLog.log(DebugLog.LVL_INFO, "EventManager", "Dropped ALL " + eventList.size() + " events.");<a name="line.116"></a>
<span class="sourceLineNo">117</span>        eventList.removeAllElements();<a name="line.117"></a>
<span class="sourceLineNo">118</span>        singleEventListFlag.removeAllElements();<a name="line.118"></a>
<span class="sourceLineNo">119</span>        deleteFlag.removeAllElements();<a name="line.119"></a>
<span class="sourceLineNo">120</span>    }<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span>    /**<a name="line.122"></a>
<span class="sourceLineNo">123</span>     * Determines whether or not an event currently exists in the stack.<a name="line.123"></a>
<span class="sourceLineNo">124</span>     *<a name="line.124"></a>
<span class="sourceLineNo">125</span>     * @return whether the event exists<a name="line.125"></a>
<span class="sourceLineNo">126</span>     */<a name="line.126"></a>
<span class="sourceLineNo">127</span>    public static boolean containsEvent(Event e) {<a name="line.127"></a>
<span class="sourceLineNo">128</span>        for(int i = 0; i &lt; eventList.size(); i++)<a name="line.128"></a>
<span class="sourceLineNo">129</span>            if(eventList.elementAt(i).equals(e)) return true;<a name="line.129"></a>
<span class="sourceLineNo">130</span>        return false;<a name="line.130"></a>
<span class="sourceLineNo">131</span>    }<a name="line.131"></a>
<span class="sourceLineNo">132</span>    <a name="line.132"></a>
<span class="sourceLineNo">133</span>    /**<a name="line.133"></a>
<span class="sourceLineNo">134</span>     * Temporarily enables or disables event processing.<a name="line.134"></a>
<span class="sourceLineNo">135</span>     */<a name="line.135"></a>
<span class="sourceLineNo">136</span>    public static void toggleEventProcessing() {EventManager.eventProcessingDisabled = !EventManager.eventProcessingDisabled;}<a name="line.136"></a>
<span class="sourceLineNo">137</span>    <a name="line.137"></a>
<span class="sourceLineNo">138</span>    /**<a name="line.138"></a>
<span class="sourceLineNo">139</span>     * Disables event processing.<a name="line.139"></a>
<span class="sourceLineNo">140</span>     */<a name="line.140"></a>
<span class="sourceLineNo">141</span>    public static void disableEventProcessing() {EventManager.eventProcessingDisabled = true;}<a name="line.141"></a>
<span class="sourceLineNo">142</span>    <a name="line.142"></a>
<span class="sourceLineNo">143</span>    /**<a name="line.143"></a>
<span class="sourceLineNo">144</span>     * Enables event processing.<a name="line.144"></a>
<span class="sourceLineNo">145</span>     */<a name="line.145"></a>
<span class="sourceLineNo">146</span>    public static void enableEventProcessing() {EventManager.eventProcessingDisabled = false;}<a name="line.146"></a>
<span class="sourceLineNo">147</span>    <a name="line.147"></a>
<span class="sourceLineNo">148</span>    private EventManager() {}<a name="line.148"></a>
<span class="sourceLineNo">149</span>}<a name="line.149"></a>




























































</pre>
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